Manufacture of ethyl alcohol by fermenting sulfite liquor.



- UNITED STATES PATENT om n PER GosTA EKsTRoM, OF HARNAsswEDEN, ASSIGNOR TO AKTIEBOLAGET ETHYL,"0F

' FALUN, SWEDEN.

MANUFACTURE OF ETHYL ALCOHOL BY FERMENTING SULFITE LIQUOR.

No Drawing.

To all evfiom 't may concern Be it known that I, PER Gos'rA EKs'rno'M, a

citizen of the Kingdom of Sweden, residing at Harniis, Sweden, have invented new and useful Improvements in the Manufacture of Ethyl Alcohol by Fermenting Sulfite Liquor,

of which the following is a specification.

' It is well known thata good yield in fermentation of saccharine liquids especially very much diluted ones cannot be obtained unless the liquid contains alimentary sub-.

stances for the .yeast, especially nitrogen compounds which may be taken up by the yeast.

This lnvention-conslsts, chiefly, 1n using urine as an alimentary substance-for the.

yeast in the fermentation of sulfite liquor for the purpose of producing ethyl alcohol therefrom. Before adding the urine to the sulfite liquor to bevfermented I prefer to sterilize the urine by heating it to a suit-able temperature, for instance 100 c. rhe object of such sterilization is to prevent the regular fermentation process from being disturbed by bacteria or similar micro-organ- Specification of Letters Patent;

Patented Dec; 3, 1912.

Application filed. February 24, 1912. Serial No. 679,797.

isms contained in the natural urine. The

the yeast already contained therein. 1 hate.

obtained good results in using about 3 liters ofurine per 1,000 litersof the usual sulfite liquor drawn off from the boilers. 7

What I claim as new and desire to secure "by Letters Patent of the United States, is

In fermenting sulfite liquor for the pur pose of manufacturing ethyl alcohol therefrom the addition of urine to the liquid to be fermented, substantially as and for the purposeset forth.

In testimony that I claim the foregoing as myinventlon, I have signed my name in presence of two subscribing witnesses.

PER GOSTA EKSTRM.

Witnesses:

Loo DELMAR,

JOHN DELMAR. 

